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post #1 of 3 (permalink) Old 03-21-11, 01:28 PM Thread Starter
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confused 90 4 cly mustang fuel problems

my fuel pump wont turn on. I bought a new one,a new fuel filter too,still wont work. So I bypassed the inertia switch,nothing,so I bought a new relay,still wont cut on.I dont know what else it could be please help!
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post #2 of 3 (permalink) Old 03-21-11, 01:53 PM
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Re: 90 4 cly mustang fuel problems

Maybe a case of going back to basics and checking out circuit to pump and see where you are losing supply / power .
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post #3 of 3 (permalink) Old 03-21-11, 09:26 PM
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Re: 90 4 cly mustang fuel problems

Is there power for a few seconds at the inertia switch when the key is turned to run? How about the relay? Is there power at the connector socket?

Here are some diagrams for the system. | Repair Guides | Wiring Diagrams | Wiring Diagrams | AutoZone.com

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